Hi everyone! I have a 60cmx30cmx30cm tank that has been running fine with only plastic plants and coloured gravel in the bottom. What do I need to set it up as a planted tank, lighting, substrate etc? Can it be converted whilst the fish are in the tank or do you have to leave it to cycle again without fish? Sorry for the real beginners question but I have no idea and want to get it right to begin with. Thanks in advance.